World s Smallest Tomato Zellajake Farm and Garden offers tomberry seeds. Red Currant plants produce copious quantities of small (~1/2 diameter) deep red tomatoes that are exceptionally sweet and packed with flavor. They typically require around 75 days to reach maturity and make a good choice for containers and hanging baskets though they are indeterminate growers. Days to Maturity: 65-80 in full sun.